全球定位系统2024，Vol.49Issue(6)：14-24,83,12.DOI:10.12265/j.gnss.2024116
北斗三号新频点绝对信号码偏差性能对比评估
Comparative evaluation of observable specific bias performance of BDS-3 new frequency
李怡文 1赵子雯 1陈姬君 1梁亚茹 1魏凯 2王棣星 1李敏1
作者信息
- 1. 山东大学空间科学与技术学院,山东威海 264209
- 2. 中国科学院齐鲁空天信息研究院,济南 250100
- 折叠
摘要
Abstract
Observable-specific signal bias(OSB),a new type of code bias,is important for improving the positioning accuracy of BeiDou navigation satellite system(BDS).This paper compares the performance of OSB products released by the Chinese Academy of Sciences(CAS)and Wuhan University(WHU)based on the new BDS-3 frequency combination B1C/B2a at the MGEX station.It is found that the stability of the OSB products of CAS is generally better than that of WHU products and has an impact on the localization performance.The PPP experiments using CAS products have better pseudorange and carrier residuals than WHU products,and their localization accuracies are also slightly better than WHU products.Moreover,the use of OSB products can improve the PPP convergence time and get higher positioning accuracy more quickly.And the effect of OSB product fluctuation on the positioning performance is analyzed,and it is found that during the fluctuation of CAS product,its pseudo-distance,carrier residual,and positioning performance all decrease.关键词
北斗三号(BDS-3)/伪距定位/精密单点定位(PPP)/绝对信号偏差(OSB)/性能评估Key words
BDS-3/pseudo-range positioning/precision point positioning/OSB/performance evaluation分类
天文与地球科学引用本文复制引用
李怡文,赵子雯,陈姬君,梁亚茹,魏凯,王棣星,李敏..北斗三号新频点绝对信号码偏差性能对比评估[J].全球定位系统,2024,49(6):14-24,83,12.
